diff options
Diffstat (limited to 'REORG.TODO/sysdeps/sparc/sparc32/rshift.S')
-rw-r--r-- | REORG.TODO/sysdeps/sparc/sparc32/rshift.S | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/sparc/sparc32/rshift.S b/REORG.TODO/sysdeps/sparc/sparc32/rshift.S new file mode 100644 index 0000000000..4185044168 --- /dev/null +++ b/REORG.TODO/sysdeps/sparc/sparc32/rshift.S @@ -0,0 +1,93 @@ +! sparc __mpn_rshift -- +! +! Copyright (C) 1995-2017 Free Software Foundation, Inc. +! +! This file is part of the GNU MP Library. +! +! The GNU MP Library is free software; you can redistribute it and/or modify +! it under the terms of the GNU Lesser General Public License as published by +! the Free Software Foundation; either version 2.1 of the License, or (at your +! option) any later version. +! +! The GNU MP Library is distributed in the hope that it will be useful, but +! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +! License for more details. +! +! You should have received a copy of the GNU Lesser General Public License +! along with the GNU MP Library; see the file COPYING.LIB. If not, +! see <http://www.gnu.org/licenses/>. + + +! INPUT PARAMETERS +! RES_PTR %o0 +! SRC_PTR %o1 +! SIZE %o2 +! CNT %o3 + +#include <sysdep.h> + +ENTRY(__mpn_rshift) + ld [%o1],%g2 ! load first limb + sub %g0,%o3,%o5 ! negate shift count + add %o2,-1,%o2 + andcc %o2,4-1,%g4 ! number of limbs in first loop + sll %g2,%o5,%g1 ! compute function result + be LOC(0) ! if multiple of 4 limbs, skip first loop + st %g1,[%sp+80] + + sub %o2,%g4,%o2 ! adjust count for main loop + +LOC(loop0): + ld [%o1+4],%g3 + add %o0,4,%o0 + add %o1,4,%o1 + addcc %g4,-1,%g4 + srl %g2,%o3,%o4 + sll %g3,%o5,%g1 + mov %g3,%g2 + or %o4,%g1,%o4 + bne LOC(loop0) + st %o4,[%o0-4] + +LOC(0): tst %o2 + be LOC(end) + nop + +LOC(loop): + ld [%o1+4],%g3 + add %o0,16,%o0 + addcc %o2,-4,%o2 + srl %g2,%o3,%o4 + sll %g3,%o5,%g1 + + ld [%o1+8],%g2 + srl %g3,%o3,%g4 + or %o4,%g1,%o4 + st %o4,[%o0-16] + sll %g2,%o5,%g1 + + ld [%o1+12],%g3 + srl %g2,%o3,%o4 + or %g4,%g1,%g4 + st %g4,[%o0-12] + sll %g3,%o5,%g1 + + ld [%o1+16],%g2 + srl %g3,%o3,%g4 + or %o4,%g1,%o4 + st %o4,[%o0-8] + sll %g2,%o5,%g1 + + add %o1,16,%o1 + or %g4,%g1,%g4 + bne LOC(loop) + st %g4,[%o0-4] + +LOC(end): + srl %g2,%o3,%g2 + st %g2,[%o0-0] + retl + ld [%sp+80],%o0 + +END(__mpn_rshift) |